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Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics

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Perspective on the Development of Lead-free Piezoceramics

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Title
Perspective on the Development of Lead-free Piezoceramics
Author
Roedel, JuergenJo, WookSeifert, Klaus T. P.Anton, Eva-MariaGranzow, TorstenDamjanovic, Dragan
Keywords
Application range; Development stages; Ionic polarizability; Lead free piezoceramics; Lead zirconate titanate; Lead-free piezoelectric ceramic; Morphotropic phase boundaries; New material; Piezoelectric property; PZT
Issue Date
2009-06
Publisher
WILEY-BLACKWELL
Citation
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.92, no.6, pp.1153 - 1177
Abstract
A large body of work has been reported in the last 5 years on the development of lead-free piezoceramics in the quest to replace lead-zirconate-titanate (PZT) as the main material for electromechanical devices such as actuators, sensors, and transducers. In specific but narrow application ranges the new materials appear adequate, but are not yet suited to replace PZT on a broader basis. In this paper, general guidelines for the development of lead-free piezoelectric ceramics are presented. Suitable chemical elements are selected first on the basis of cost and toxicity as well as ionic polarizability. Different crystal structures with these elements are then considered based on simple concepts, and a variety of phase diagrams are described with attractive morphotropic phase boundaries, yielding good piezoelectric properties. Finally, lessons from density functional theory are reviewed and used to adjust our understanding based on the simpler concepts. Equipped with these guidelines ranging from atom to phase diagram, the current development stage in lead-free piezoceramics is then critically assessed.
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DOI
10.1111/j.1551-2916.2009.03061.x
ISSN
0002-7820
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MSE_Journal Papers
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